Operating instructions for use and installation skills of Roots blower

1. All parts of Roots blower shall be comprehensively inspected to see whether the parts are complete, the connection tightness of all bolts and nuts, the installation quality of all fasteners and locating pins, and the installation quality of air inlet and exhaust pipes and valves.
2. In order to ensure the safe operation of the blower, it is not allowed to bear external loads such as pipes, valves, frames, etc.
3. Check the centering and alignment quality of blower and motor.
4. Check whether the base of the unit is fully padded and whether the foundation bolts are fastened.
5. Fill the oil tank with mechanical oil of specified brand into the oil level line, and the lubricating oil brand is N220 medium load working gear oil.
6. Check whether the rotation direction of the motor meets the pointing requirements.
7. The belt cover (protective cover) shall be installed at the belt pulley (coupling) to ensure the safety of operation.
8. Fully open the inlet and outlet valves of the blower, and turn the rotor of the blower. It should rotate flexibly without impact and friction. Only when it is confirmed that everything is normal can the blower be started for trial operation. 9. No load test run of blower
(1) Newly installed or overhauled fans shall undergo no-load test run.
⑵ The concept of no-load operation of Roots blower is to put it into operation when the inlet and outlet valves are fully opened.
⑶ There is no abnormal smell or smoke, collision or friction sound, and the radial vibration speed of the bearing is not greater than 6.3mm/s.
⑷ Run with no load for about 30 minutes. If the condition is normal, put it into load operation. If the operation is abnormal, check and eliminate it, and still need to run with no load.
10. The blower operates continuously under normal load
(1) It is required to gradually and slowly adjust the load to the rated load. It is not allowed to adjust the load to the rated load at one time.
(2) The so-called rated load refers to the static pressure difference between the inlet and exhaust ports, according to the calibrated pressure value on the nameplate. When the pressure at the exhaust port is normal, pay attention to the pressure change at the air inlet to avoid overload.
⑶ During the normal operation of the fan, it is strictly prohibited to completely close the inlet and outlet valves. Pay attention to the pressure condition regularly, and check whether the safety valve acts to exhaust in case of overload. Otherwise, the safety valve should be adjusted in time, and overload operation is not allowed.
⑷ Due to the characteristics of Roots blower, it is not allowed to directly return the gas from the exhaust port to the air inlet of the blower for a long time (changing the temperature of the air inlet), otherwise the safety of the machine will be affected. If it is necessary to take reflux regulation, cooling measures must be taken.
(5) Always pay attention to the oil quantity position of lubricating oil, check regularly, and make records to ensure the oil quantity. Equipment maintenance of Roots blower can be carried out by automatically injecting lubricating oil, as shown in the figure:
11. The blower should not be stopped suddenly under full load. It must be stopped after unloading gradually to avoid damage to the machine. Users can draw up rules for emergency shutdown.
The safe operation and service life of the blower depend on correct and frequent maintenance and attention should be paid to any accident. In addition to general maintenance procedures, attention should be paid to the following points.